核电站废气中氢氧复合的研究(Ⅰ)——小型试验

INVESTIGATION ON RECOMBINATION OF HYDROGEN AND OXYGEN IN GASEOUS WASTE OF NUCLEAR POWER PLANT(Ⅰ)——SMALL SCALE TEST

为了适应我国核电发展的需要,进行了核电站废气中氢氧复合的研究。研制了适合于核电站工艺废气处理中氢氧复合用的高效催化剂,进行了氢氧复合各种工艺条件试验,确定了氧氧复合的最佳工艺条件。实验结果表明:含钯量为0.5％的Pd-Al_2O_3催化剂性能良好,氢氧复合率均很高,氢复合率>98.3％,氧复合率>99.9％。复合后尾气中氢氧含量很低,氧含量<3ppm,氢含量<400ppm(体积ppm)。在一定的工艺条件下完全能满足核电站工艺废气处理的要求。

The recombination of hydrogen and oxygen in technical gaseous waste of nuclear power plant was investigated. The high efficient catalyst for reacting H_2 with O_2 to form water had been prepared. The various operating condition and effective factors for recombination of hydrogen and oxygen were tested, the best operating conditions were determined. Results show that catalyst Pd-Al_2O_3 prepared by us had very good characteristics, recombination rate of hydrogen was higher than 98.3%, recombination rate of oxygen was higher than 99.9%. After recombination, the concentration of H_2 and O_2 in waste gas were O_2<3 ppm, H_2<400 ppm. The catalyst Pd-Al_2O_3 and operating conditions chosen for gaseous waste processing of nuclear power plant were satisfactory.